<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<div id="Time">
    <h1>{{ date }}</h1>
</div>


<script src="../vue.global.js"></script>
<script>
    Vue.createApp({
        data() {
          return {
              date:''
          }
        },
        mounted() {
            let data = '';
              setInterval((start)=>{
                      data = new Date()
                      this.date = data.getHours()+':'+data.getMinutes()+':'+data.getSeconds()
                  }
                  ,1000)
        }
    }).mount('#Time')
</script>
</body>
</html>